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74 lines
1.7 KiB
74 lines
1.7 KiB
/* |
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* Copyright (C) 2008 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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/* |
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* System clock functions. |
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*/ |
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#define LOG_TAG "SystemClock" |
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#include <utils/SystemClock.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <time.h> |
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#include <cutils/compiler.h> |
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#include <utils/Timers.h> |
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#include <utils/Log.h> |
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namespace android { |
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/* |
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* native public static long uptimeMillis(); |
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*/ |
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int64_t uptimeMillis() |
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{ |
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int64_t when = systemTime(SYSTEM_TIME_MONOTONIC); |
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return (int64_t) nanoseconds_to_milliseconds(when); |
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} |
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/* |
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* native public static long elapsedRealtime(); |
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*/ |
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int64_t elapsedRealtime() |
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{ |
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return nanoseconds_to_milliseconds(elapsedRealtimeNano()); |
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} |
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/* |
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* native public static long elapsedRealtimeNano(); |
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*/ |
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int64_t elapsedRealtimeNano() |
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{ |
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#if defined(__linux__) |
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struct timespec ts; |
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int err = clock_gettime(CLOCK_BOOTTIME, &ts); |
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if (CC_UNLIKELY(err)) { |
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// This should never happen, but just in case ... |
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ALOGE("clock_gettime(CLOCK_BOOTTIME) failed: %s", strerror(errno)); |
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return 0; |
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} |
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return seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec; |
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#else |
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return systemTime(SYSTEM_TIME_MONOTONIC); |
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#endif |
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} |
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}; // namespace android
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